Gas fired hot water boiler construction



NOV. 5, BAlER GAS FIRED HOT WATER BOILER CONSTRUCTION Filed April 24, 1967 3 Sheets-Sheet 1 FIG.

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. I JOHN E 5 IEE I ATTORNEY Nov. 5, 1968 J. F. BAIER 3,408,989

GAS FIRED HOT WATER BOILER CONSTRUCTION Filed April 24, 1967 3 Sheets-Sheet 2 FIG 2a 'INVENTOR JOHN E BA/EZ ma/MW ATTORNEY ND". 5, J. F BA|ER GAS FIRED HOT WATER BOILER CONSTRUCTION Filed April 24, 1967 5 Sheets-Sheet 3 40 1,, :2 FIG. 3 5

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7 .w AUTO/P KE) United States Patent 3,408,989 GAS FIRED HOT WATER BOILER CONSTRUCTION John F. Baier, New York, N.Y. (411 Clinton St., Northvale, NJ. 07647) Filed Apr. 24, 1967, Ser. No. 633,036 9 Claims. (Cl. 122-214) ABSTRACT OF THE DISCLOSURE The disclosure relates to a gas fired hot water boiler construction with a series of superimposed reversible cast iron sections, each having tubes with sliding sides alternating in position so as to be positioned above the space or below the space of the next lower or higher section. The boiler is mounted adjacent a Wall and external air is received through an opening in the wall. A suitable external insulating casing is provided so that the air entering for combustion of the gas will be pre-heated by passing downwardly over a side or portion of the hot water sections while the room air may be caused to be heated by being passed over the side of the hot water sections.

The present invention relates to a gas fired hot water boiler construction, and -it particularly relates to a combination gas fired hot water boiler construction which will permit the use of the hot water boiler for heating the air which may be introduced into a home or enclosure.

It is among the objects of the present invention to provide a compact small boiler construction which may be readily employed for domestic heating purposes.

Another object of the present invention is to provide a compact small size boiler construction which may be readily mounted adjacent a wall with maximum space economy and which will be conveniently positioned so as to receive and discharge interior air to be heated as well as additional air to form a source of combustion in the boiler for the gas.

The purpose of the heating is primarily to heat the room air in the enclosure or house. The boiler surfaces are used in the preferred embodiment of the invention to heat the room air, especially in the spaces adjacent the boiler. Remote spaces or rooms are heated by circulating hot boiler water through radiators and other sources of heat transfer. In addition, combustion air is pre-heated by contacting the hot boiler surfaces.

Still further objects and advantages will appear in the more detailed description set forth below, it being understood, however, that this more detailed description is given by way of illustration and explanation only and not by way of limitation, since various changes therein may be made by those skilled in the art without departing from the scope and spirit of the present invention.

According to the preferred embodiment of the present invention, the boiler housing is mounted on or closely adjacent to a wall and may receive or discharge external air through an opening in the wall and at the same time the boiler is so enclosed between the wall and a suitable external insulated casing that the air entering for combustion of the gas will be preheated by passing downwardly over a side or portion of the hot water section while the room air be caused to be heated by being passed over from the side of the hot water sections.

Desirably, in the preferred form, there are three heating chambers, one along one side of the boiler for the incoming air passing to the gas combustion chamber at the bottom of the boiler; a second external chamber which permits the room air to pass upwardly over a side of the assembled or interior housings or casings of the boiler Patented Nov. 5, 1968 'ice and a third compartment or chamber in which the combustion gases will flow upwardly over the water sections between the other two chambers and then be discharged into the atmosphere.

Atlhough the present invention is particularly described to a superimposed reversible water tube boiler construction, it is to be understood that it also may be applied to vertical type assembled boiler constructions in which a plurality of chambers are arranged for heating, respectively for preheating combustion air, for heating interior room air, and for conducting the combustion gases upwardly over the water tube sections for heating the water, to give a supply of hot water as Well as for other domestic purposes.

Another feature resides in the fact that the gas bu ners are desirably supported substantially below the water tube sections which are horizontal in structure and are provided with outstanding heat conductive fins which extend to the side of and below each water tube.

The water tubes are desirably of single or double rectangular shape, and they may have relatively flat or slightly curved top sides and straight and downwardly inward- 1y curved oblique sides which terminate at the lower portion of each section and do not extend below the sections.

The fins which are placed along the length of the top and which .are desirably cast or formed integrally therewith should extend below the tubes but not above the tubes leaving the top of the tubes free and devoid of any projecting fin portions.

These fins should not extend above or below the upper and lower boundaries of each horizontal section.

The fins desirably should be laterally offset from one another but should be slightly spaced from one another along the length of the tubes, and they may slightly diverge from one another toward the lower ends of the tubes.

The horizontal sections are desirably reversible and each of the sections has a downwardly extending peripheral wall which fits into a peripheral recess on the top of the next section.

With the foregoing and other objects in view, the invention consists of the novel construction, combination and arrangement of parts as hereinafter more specifically described and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which fall within the scope of the claims hereunto appended.

In the drawings wherein like characters denote corresponding parts throughout the several views:

FIG. 1 is a side diagrammatic elevational view showing the attachment of the boiler to a wall structure with the various air and gas passages therethrough.

FIG. 2 is a transverse vertical sectional view upon the line 22 of FIG. 1 illustrating the superimposed reversible horizontal sections upon an enlarged scale as compared to FIG. 1.

FIG. 3 is a transverse vertical sectional view upon the line 3-3 of FIG. 2 showing the positioning of the horizontal sections and the connection of the ends thereof upon a reduced scale as compared to FIG. 2.

FIG. 4 is a top plan view of the uppermost section taken upon the line 4-4 of FIG. 3.

FIG. 5 is a top plan view of the base section taken upon the line 5-5 of FIG. 3.

FIGS. 21: and 2b are fragmentary cross-sectional views showing the application of other projections or vanes upon the boiler structure to transmit additional heat to the air flowing thereby.

Referring to FIG. 1, there is shown an outside wall A with an internal hot water construction B.

The wall may be provided with an opening C to receive the intakel) for fresh incoming outside air, and the out-take E for outgoing combustion gases.

The boiler is provided with an insulated enclosure consisting of a rear wall P which may be of wire, brick or of suitable insulated metal, the outside wall G and the side walls H.

Desirably, there is formed three vertical gas passageways.

There is an interior passageway J adjacent the wall F for the incoming outside air indicated by the arrows K.

The forward passageway L is for the room air to be heated which flows upwardly as indicated by the arrows M and an interior set of passageways through the interior set of passageway for the combustion gases indicated diagrammatically at N.

The boiler structure itself is provided with a lower combustion chamber Q having the burners R and with the reversible horizontal sections S, T and U.

The outgoing gases E may be connected to an upwardly extending stack or chimney.

The burners are conveniently adjusted by means of the external adjustment connection V which extends through the front wall G of the boiler construction.

The actual boiler sections are shown in FIGS. 2, 3, 4 and 5.

Referring particularly to FIG. 2, each of the sections S, T and U are provided with triangular or oblique side intermediate tubes 20 which are offset in respect to one another and which are provided :with slightly convex upper relatively flat faces 21 and downwardly convergent slightly inwardly curved side faces 22.

Each tube has desirably cast or formed therewith the fine 23 which terminate at their upper ends 24 below the top face of the tube 20.

At their side edges 25, they project outwardly to about a distance which is between one-fourth to one-half the maximum width of the tube 20, and they desirably have lower oblique straight edges 26 which converge downwardly to the lower straight horizontal edges 27.

These fins as shown in FIG. 2 will terminate at or just slightly above the junction lines 28 and 29 of the sections (see FIG. 2) and at their lower edges 27 Their width will be slightly in excess of the maximum width of the tubes.

The lowermost section S as shown in FIG. 2 may have the fins 30 arranged so that they will commence at the edges 31 at the widest portion of the tubes and then curve downwardly to the lower straight edges which are at the bottom edges 32 of the tubes at the narrowest portion 33 thereof.

As a result, the lowermost section will have the minimum fin area, and the fins at no place will extend below or beyond the lower or side edges of the tubes.

The upper sections as indicated in FIG. 2 have side tubular portions which vary in width, the tubular section 34 having about twice the width as the tubular section 35.

This variation in tubular section which alternates from section to section is for the purpose of permitting reversibility and assuring that the tubes in each successive horizontal section S, T and U will be offset in respect to each other as indicated in FIG. 2 to cause the up flowing gases to take a sinuous path.

The top of each section is desirably provided with a peripheral groove or recess portion 36 which as shown is formed of an inside and outside wall to receive the depending peripheral leg portions '37.

These grooves as shown best in FIGS. 4 and will have side elongated portions 38 and short end portions 39, and they will enclose and extend around the entire horizontal sections S, T and U around the upper periphery thereof and above the top faces 21 of the tubes.

Each of the sections will have an outwardly projecting water communication pocket constituting an inlet pocket 40 and an outside pocket 41 (see FIG. 3).

The outlet pockets are provided with the imperforated bottom walls 42 and with the upper openings 43 in the top of each lower pocket 41 to provide connection nipples 44 to be inserted to connect the top of each outlet pocket 41 of each next higher inlet pocket 41.

Each upper inlet pocket 40 is provided with an opening 45 in its lower wall to receive the upper end of the connection nipple 44.

These pockets 40 and 41 extend beyond the sections S, T and U as indicated in FIG. 1.

The water being heated wlil be caused to flow in a zig zag fashion in a manner indicated by the arrows 46, 47 and 48, and it will fiow out through the last opening 45 as indicated by the arrow 49 whence it may be connected to a piping or conduit system so as to supply heating water for radiation, washing or other domestic purposes.

The pockets 40 and 41 extending forwardly and rearwardly as indicated in FIG. 1 beyond the horizontal stack S-T-U may be provided with fins or other heating extensions to heat the incoming air passing downwardly through the rear enclosure J and also to heat the house air or room air which passes upwardly through the forward enclosure L.

The forward enclosure L is formed by the front wall G, and it has a lower inlet 65 for the incoming inside air to be warm which will pass up over the projecting chambers 40 and 41 whence it will pass out through the openings 66, 67 and 68 to supply warm air to the room or other enclosure without contamination of the combustion gases which flow up over the tubes.

The incoming air K will pass through a screen or other protective device 69 (see FIG. 1) and will flow through the opening 70 in the lower wall 71 to the burner chamber H The burners R as shown in FIG. 2 consist of lower inlet chamber 72 having the flanges 73 mounted by the screws 74 on the base structure 75.

These lower burner chambers 72 are connected to a gas supply not shown and to an adjustable air supply 76 which may be adjusted by means of a rod device having the handle 77 in front of the boiler structure.

The air and gas mixture will flow through the burner sections 78 and through the burner nipples 79 where a combustion will take place as indicated by the arrows 80 in the combustion chamber 81.

The side walls 82 and the front and back walls 83 and 84 of the combustion chamber will be formed by the downwardly extending fins from the lowermost water tube section S, and they will fit into the grooves 85, 86 and 87 at the top of the walls 71, 88, and 89 mounted on the base 75 of the boiler construction.

Desirably, the rear walls 84 of the lower section S will carry an inlet water pocket 90 to which a suitable water connection will be made as indicated by the arrow 91 in FIG. 1 for admission of water to the inlet pocket 40 of the lowermost horizontal section S.

The walls 82, 83 and 84 may be provided with water pockets if desired for the circulation of water to be received from the inlet pocket 90 so as to keep the walls of the chamber 92 (see FIGS. 1 and 2) cool and achieve the maximum heat absorption from the gas.

Normally, however, the hot gases will arise as indicated by the arrows 80 in FIGS. 1 and 2 and will flow up to the chamber 92 and then in sinuous fashion around and pass the tubes 20 and over the fins 24 until they flow into the chamber 93 formed by the front and back walls 94 and 95 and the side walls 96 and then out to the horizontal flow formed by the top and bottom walls 97 and 98 and the side walls 100.

From the horizontal flow passage 97-98-100, the gases then flow into a stack or pass out to the screen 101 in the outside enclosure 102 mounted on the exterior of the wall A.

The various sections may be connected together by means of the ears 103 at one end and 104 at the other end of each horizontal section which have the openings 105 and 106 to receive the through bolts.

It is thus apparent that the present application has provided a compact novel horizontal section hot water boiler, the sections of which may be made of cast iron or steel and which will accomplish both heating of room air as well as hot water for heating or for domestic purposes.

The total height of the boiler may be in the neighborhood of about 8 to 10 inches or more depending upon the number of sections and the lowermost sections S desirably have a height of about 3 to 4 inches and a width of about 10 to 11 inches and a length of about 16 to 20 inches.

The height of the upper sections T and U may be about 3 to 4 inches and they may have a length of 16 to 20 inches.

Each tube desirably has a maximum width of about 1 /2 to 3 inches and a maximum height of about 2 to 4 inches.

The side tubes 34 may have a width of about one and one-half to twice that of the inside tubes, and they will have the same height of the inside tubes.

The narrow side tubes 35 will have about the same width as the internal tubes and have about the same water carrying capacity. I

The various outstanding members 250 and 251 shown in FIGS. 2a and 2b may be applied to any wall or projection of the reversible sections to give extra heat transferring properties. For example, these vanes or fins may be applied to the side Walls as shown in FIG. 2 and may project from the sides of the sections S, T and U to give extra heat transferring properties.

As many changes could be made in the above gas fired hot water boiler construction, and many widely different embodiments of this invention could be made without departing from the scope of the claims, it is intended that all matter contained in the above description shall be interpreted as illustrative and not in a limiting sense.

Having now particularly described and ascertained the nature of the invention, and in what manner the same is to be performed, what is claimed is:

1. A sealed combustion combination gas fired hot water boiler for supplying hot water for heating and domestic purposes and also for supplying hot air for room heating purposes for mounting upon a building wall having an opening for receiving outside air and discharging combustion gases comprising a multi-water section boiler, a lower gas burner chamber below said boiler, said sections having interfitting connecting wall members to form an interior enclosure for conducting combustion gases through said sections an outside enclosure along one side of said Water sections for conducting outside air while preheating the outside air to the gas burner chamber, another outside enclosure for conducting room air along another side of said sections and heating said room air for supplying heated room air, said sections having outwardly projecting heat radiating members extending into said outside enclosures to heat the air flowing therethrough, said outside enclosures extending vertically along opposite sides of multi-section boiler and said outside air enclosure for preheating the outside air being sealed from the outside enclosure for heating the room air.

2. The boiler of claim 1, said multi-section boiler including a plurality of reversible superimposed horizontal sections having interfitting peripheral portions to form a closed internal chamber for combustion gases and having forwardly and rearwardly projecting heat radiating purposes serving also as hot water inlet and outlet chambers and said enclosures taking the form of enclosing walls to conduct the outside air vertically downwardly across the outside ends of such sections and to conduct the room air vertically upwardly across the inside ends of said sections, said inside enclosure having a bottom inlet and top outlet and said outside enclosure having a top inlet and bottom outlet.

3. The boiler of claim 1, each of said sections being horizontal and having oblique side horizontal tubes and fins on said tubes extending horizontally and vertically from the sides and bottom of said tubes and terminating within the upper and lower boundaries of the sections.

4. The boiler of claim 1, each of said sections being horizontal and having oblique side horizontal tubes and fins on said tubes extending horizontally and vertically from the sides and bottom of said tubes and terminating within the upper and lower boundaries of the sections, each of said sections having peripheral upper grooves extending along the sides and ends thereof to form a rectangular groove around the entire periphery thereof and on the top of each of the sections and the lower portion of each section having a depending fin extending around the entire periphery thereof fitting into said groove.

5. The boiler of claim 1, said multi-section boiler having a lowermost inlet and gas burner chamber for receiving outside air from the enclosure which conducts the outside air and having an intermediate combustion chamber below the water sections.

6. The boiler of claim 1, each of said sections consisting of horizontal water tube sections which are reversible and having a plurality of offset oblique side water tubes extending horizontally therethrough and positioned directly above the lower gas burner chamber.

7. The 'boiler of claim 1, said outside enclosure being provided with an upper outlet opening extending through the wall for the release of the combustion gases, and with a lower inlet opening also extending through the walls for the receipt of outside fresh air to be preheated.

8. The boiler of claim 1, said outside enclosure being provided with an upper outlet opening extending through the wall for the release of the combustion gases, and with a lower inlet opening also extending through the walls for the receipt of outside fresh air to be preheated, and said outlet and inlet openings being provided with screenings to protect the same.

9. The boiler of claim 1, each of said sections consisting of horizontal water tube sections and a plurality of outwardly extending fins attached to the side walls of the sections and extending outwardly therefrom to give extra heat transferring property.

References Cited UNITED STATES PATENTS 503,141 8/1893 Howard 126101 X 1,781,915 11/1930 Cross 122214 1,809,920 6/1931 Woodward 122--214 X 2,841,124 7/1958 Ackerman 122214 CHARLES J. MYHRE, Primary Examiner. 

